ActsEvent: Fix a couple decoration problems.
In decorationSetter, we need to be sure that the size requested for the decoration matches the existing size of the container.
Implement dynamicKeys() for the read-only case as well.
cf. !78014 (merged)
In decorationSetter, we need to be sure that the size requested for the decoration matches the existing size of the container.
Implement dynamicKeys() for the read-only case as well.
cf. !78014 (merged)